The surface extension of all-carbon based bowl-shaped molecules, such as corannulene and sumanene, to synthesize even larger buckybowls has been widely studied, leaving other concave compounds with heteroatoms less considered. Herein we present a highly curved molecule synthesized via stepwise cyclization of fjords of a bisacridone derivative. Crystallographic analysis unambiguously confirmed a boat-shaped structure with deformed bottom benzene ring. Theoretical calculation unravels an inversion process with an S-shaped transition structure rather than a planar one. The enlarged boat demonstrates interesting properties, such as red shifts in absorption and emission spectra, enhanced emission intensity, and convergent frontier molecular orbital energy levels, in comparison to the related concave N-heterotriangulene. © 2020 Wiley-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.Caffeine, the most commonly consumed psychoactive drug in the world, is readily available in dietary sources, including soft drinks, chocolate, tea and coffee. However, little is known about the neural substrates that underlie caffeine's rewarding and aversive properties and what ultimately leads us to seek or avoid caffeine consumption. Using male Wistar rats in a place conditioning procedure, we show that systemic caffeine at a low intraperitoneal dose of 2&nbsp;mg/kg (or 100&nbsp;?M injected directly into the rostral, but not caudal, portion of the ventral tegmental area) produced conditioned place preferences. By contrast, high doses of systemic caffeine at 10 and 30&nbsp;mg/kg produced conditioned place aversions. These aversions were not recapitulated by a caffeine analog restricted to the periphery. Both caffeine reward and aversion were blocked by systemic D1-like receptor antagonism using SCH23390, while systemic D2-like receptor antagonism with eticlopride had smaller effects on caffeine motivation. Most important, we demonstrated that pharmacological blockade of dopamine receptors using α-flupenthixol injected into the nucleus accumbens shell, but not core, blocked caffeine-conditioned place preferences. Conversely, α-flupenthixol injected into the nucleus accumbens core, but not shell, blocked caffeine-conditioned place aversions. Thus, our findings reveal two dopamine-dependent and functionally dissociable mechanisms for processing caffeine motivation, which are segregated between nucleus accumbens subregions. These data provide novel evidence for the roles of the nucleus accumbens subregions in mediating approach and avoidance behaviours for caffeine. © 2020 Federation of European Neuroscience Societies and John Wiley &amp; Sons Ltd.Sperm quality can be affected by a reduction in testicular blood flow, which can be measured by Doppler ultrasonography. The aim of this study was to correlate the Doppler velocimetry of the testicular artery with kinetics of the epididymal spermatozoa in dogs. Twenty-two dogs (44 testicles) were evaluated by Doppler ultrasonography in five regions of the testicular artery before orchiectomy. Spermatozoa were recovered by the epididymal tail compression technique and analysed for kinetics on a computer-assisted semen analysis (CASA system). Morphology (modified Karras) and sperm membrane integrity were analysed by eosin-nigrosine staining. Data were analysed by Pearson's correlation test (p&nbsp; less then &nbsp;.01). The mean total motility was 69.0%&nbsp;±&nbsp;17.7, progressive motility was 43.7%&nbsp;±&nbsp;14.7, average path velocity (VAP) was 127.0&nbsp;?m/s&nbsp;±&nbsp;20.7, curvilinear velocity (VCL) was 221.0&nbsp;?m/s&nbsp;±&nbsp;31.1, and sperm velocity index (SVI) was 389.9&nbsp;±&nbsp;56.1. There were positive correlations between the peak systolic velocity (PSV) in the proximal supratesticular region with the SVI (r&nbsp;=&nbsp;.529), VCL (r&nbsp;=&nbsp;.555) and VAP (r&nbsp;=&nbsp;.473), and a negative correlation with the percentage of slow spermatozoa (r&nbsp;=&nbsp;-.463). https://www.selleckchem.com/products/e7766-diammonium-salt.html The results suggest that the testicular artery blood flow velocity can positively affect the speed of spermatozoa movement. For the first time, we have correlated sperm kinetics with the Doppler evaluation of the testicular artery in dogs. © 2020 Blackwell Verlag GmbH.Field effect transistors (FETs) based on 2D materials are of great interest for applications in ultrathin electronic and sensing devices. Here we demonstrate the possibility to add optical switchability to graphene FETs (GFET) by functionalizing the graphene channel with optically switchable azobenzene molecules. The azobenzene molecules were incorporated to the GFET channel by building a van der Waals heterostructure with a carbon nanomembrane (CNM), which is used as a molecular interposer to attach the azobenzene molecules. Under exposure with 365?nm and 455?nm light, azobenzene molecules transition between cis and trans molecular conformations, respectively, resulting in a switching of the molecular dipole moment. Thus, the effective electric field acting on the GFET channel is tuned by optical stimulation and the carrier density is modulated. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH &amp; Co. KGaA.BACKGROUND Perinatal childhood exposures, including probiotic supplementation, may affect epigenetic modifications and impact upon immune maturation and allergy development. The aim of this study was to assess the effects of pre-and postnatal Lactobacillus reuteri supplementation on DNA methylation in relation to immune maturation and allergy development. METHODS DNA methylation patterns were investigated for allergy-related T helper subsets using a locus-specific method and at a genome-wide scale using the Illumina 450K array. From a randomised, double-blind, placebo-controlled allergy prevention trial with pre- and postnatal probiotic supplementation, CD4+ T helper cells were obtained at birth (from cord blood), 12 and 24 months of age (Total (placebo/probiotics); locus-specific method CB = 32 (17/15), 12 months = 24 (9/15), 24 months = 35 (15/20); Illumina CB = 19 (10/9), 12 months = 10 (6/4), 24 months = 19(11/8)). RESULTS Comparing probiotics to placebo, the greatest genome-wide differential DNA methylatopyright. All rights reserved.The combined incidence of classical Philadelphia-negative myeloproliferative neoplasm (MPN) is 6-9/100&nbsp;000 with a peak frequency between 50 and 70&nbsp;years. MPN is less frequent in women of reproductive age. However, for essential thrombocythaemia (ET) in particular there is a second peak in women of reproductive age and 15% of polycythaemia vera (PV) patients are less than 40&nbsp;years of age at the time of diagnosis. Thus these diseases are encountered in women of reproductive potential and may be diagnosed in pregnancy or in women being investigated for recurrent pregnancy loss. The incidence of MPN pregnancies is 3?2/100&nbsp;000 maternities per year in the UK. The majority of data regarding Philadelphia-negative MPNs relates to patients with ET, for which the literature suggests significant maternal morbidity and poor fetal outcome; specifically maternal thrombosis and haemorrhage, miscarriage, pre-eclampsia, intrauterine growth restriction (IUGR), stillbirth and premature delivery as summarised in the recent systematic review and meta-analysis in Blood, 2018, 132, 3046.